Perhaps you should try some spelling variations:
tang zheng » wang zheng, fang sheng, fang zhen
china wang » china chang, china zhang, china won
china yang » china ying, china chang, china zhang
yang jun » yang jui, pang jun, yang jin
tong hui » wang hui
yang xi » yang di, yang yi, yang jui
leung » leong, lung, yeung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: leung tang zheng ((china wang) OR (china yang)) ((yang jun) or (yang xi)) tong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: leung tang zheng ((china wang) OR (china yang)) ((yang jun) OR (yang xi)) tong hui ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "leung tang zheng ((china wang) OR (china yang)) ((yang jun) or (yang xi)) tong hui ;*".